Many who fought in WWII prayed to God for victory and their
very lives. I believe God was present and affecting the war as freedom
(especially of religion) and stopping evil was a very real effort in this war.

Vietnam was different and a waste of lives to me but there again-was that one OK
with God? I believe life and death in the physical sense means little to God and
spiritual things mean everything.

They say there are no atheists in a foxhole-something like
that. If God can condemn souls to hell then why can't he condemn the living evil
to die by the sword with which they live. It's just that I myself would hate to
have to kill anyone but under certain circumstances I know I would. If I caught
a man molesting my daughter then I know I would kill with a deep hatred and
anger.